ANATOMY

Detailed explanation-1: -Looking at the egg from the outside we see the shell, which is a hard, protective covering composed primarily of calcium carbonate. The shell is porous and the large end contains more pores than the small end of the egg. (There are about 7, 000 pores in a chicken eggshell.)

Detailed explanation-2: -shell-the hard, protective coating of the egg. It is semi-permeable; it lets gas exchange occur, but keeps other substances from entering the egg. The shell is made of calcium carbonate. thick albumin-the stringy part of the egg white (albumin) located nearest the yolk.

Detailed explanation-3: -Eggshell is made almost entirely of calcium carbonate (CaCO3) crystals. It is a semipermeable membrane, which means that air and moisture can pass through its pores. The shell also has a thin outermost coating called the bloom or cuticle that helps keep out bacteria and dust.

Detailed explanation-4: -An eggshell is the outer covering of a hard-shelled egg and of some forms of eggs with soft outer coats.

Detailed explanation-5: -The shell is the egg’s outer covering, accounting for about 9 to 12% of its total weight depending on egg size. The shell is the egg’s first line of defense against bacterial contamination. This bumpy and grainy outer covering has approximately 17, 000 tiny pores and is made almost entirely of calcium carbonate.